# Caveman Setup (agent skill)

> Caveman Setup is an agent skill (a SKILL.md file) from JuliusBrussee/caveman. Wire a repository through the Caveman Cloud gateway so every LLM request is measured, with no behavior change. It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 110,252 GitHub stars across a repository of 4 listed skills.

Wire a repository through the Caveman Cloud gateway so every LLM request is measured, with no behavior change. Use for "set up caveman" or adding LLM spend observability. You are wiring this repository through the Caveman gateway. Caveman is a byte-preserving LLM proxy: in record mode it measures what your app sends and what it costs, and changes nothing else. Your job is a minimal, verified integration — not a refactor.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/JuliusBrussee/caveman |
| Skill path | skills/caveman-setup/SKILL.md |
| Skill name | caveman-setup |
| GitHub stars | 110,252 |
| Installs on skills.sh | 83,691 |
| License | Apache-2.0 |
| Skills in repo | 4 |
| Plugin marketplace | caveman |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode |
| Category | DevOps & cloud |
| Last commit | Oct 6, 2026 |

## When it triggers

- Use for "set up caveman" or adding LLM spend observability.
- "set up caveman"

## Add this skill

### Claude Code

```sh
/plugin marketplace add JuliusBrussee/caveman
/plugin install caveman@caveman
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/JuliusBrussee/caveman.git
cp -r caveman/skills/caveman-setup .agents/skills/caveman-setup   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/JuliusBrussee/caveman.git
cp -r caveman/skills/caveman-setup .cursor/skills/caveman-setup   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/JuliusBrussee/caveman/caveman-setup

---

Canonical page: https://appsgit.com/skills/juliusbrussee-caveman-setup
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